161200565696 has 28 divisors (see below), whose sum is σ = 319924678920. Its totient is φ = 80589623040.

The previous prime is 161200565627. The next prime is 161200565767. The reversal of 161200565696 is 696565002161.

It is a self number, because there is not a number n which added to its sum of digits gives 161200565696.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332735 + ... + 658113.

It is an arithmetic number, because the mean of its divisors is an integer number (11425881390).

Almost surely, 2^161200565696 is an apocalyptic number.

161200565696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161200565696 is a deficient number, since it is larger than the sum of its proper divisors (158724113224).

161200565696 is an equidigital number, since it uses as much as digits as its factorization.

161200565696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333132 (or 333122 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 47.

The spelling of 161200565696 in words is "one hundred sixty-one billion, two hundred million, five hundred sixty-five thousand, six hundred ninety-six".